Product Description
Schmersal BNS-B20-12Z-R – Magnetic safety sensor of the BNS-B20 series. It detects without contact whether the guard is closed: when the matching magnetic actuator approaches, the contacts in the sensor switch. Evaluation is via a suitable safety monitoring module. The manufacturer's article number is 101186267, the EAN 4030661333519.
Scope of delivery
Actuator must be ordered separately.
Important note
Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit., The contact configuration for versions with or without LED is identical., Contact symbols shown for the closed condition of the guard device.
Technical data
Safety-related characteristic data (6)
| Standards |
EN ISO 13849-1 |
| Mission time |
20 Year(s) |
| Coding level according to EN ISO 14119 |
Low |
| Recommended safety switchgear |
SRB-E-301ST, SRB-E-201LC |
| B10D- Value Normally-closed contact/Normally open contact (NC/NO) |
25,000,000 Operations |
| Coding |
Yes |
Actuation and switching function (7)
| Latching force |
100 N |
| Actuating element |
Magnet |
| Door hinge |
Right |
| Note (switching distance) |
All switching distances in accordance EN IEC 60947-5-3 |
| Recommendation (actuator) |
BNS-B20-B01 |
| Door weight, Hinged guard, maximal |
5 kg |
| Door weight, Sliding guard, maximal |
3 kg |
Contacts and connection (9)
| Switching element |
1 NO contact, 2 NC contacts |
| Number of safety contacts |
2 |
| Cable entry |
bottom |
| Length of cable |
1 m |
| Note (Wiring diagram) |
Contact S21-S22 must be integrated in the safety circuit. |
| Number of normally closed (NC) |
2 |
| Number of normally open (NO) |
1 |
| Number of cable wires |
6 |
| Termination |
cable |
Electrical data (5)
| Switching current, maximum |
0.25 A |
| Switching capacity, maximum |
3 W |
| Switching frequency, maximum |
5 Hz |
| Switching voltage, maximum |
100 VAC |
| Switching voltage, maximum |
100 VDC |
Design, material, environment (16)
| Working principle |
Magnetic drive |
| Housing material |
Glass-fibre, reinforced thermoplastic |
| Length of sensor |
43.3 mm |
| Width of sensor |
119.5 mm |
| Height of sensor |
140 mm |
| Gross weight |
146 g |
| IP Degree of protection |
IP67 |
| Ambient temperature |
-25 ... +70 °C |
| Storage and transport temperature |
-25 ... +70 °C |
| Installation conditions (mechanical) |
quasi-flush |
| Wire cross-section |
0.25 mm² |
| Assured switching distance "OFF" Sar
|
22 mm |
| Assured switching distance "ON" Sao
|
0 mm |
| Material of the Cable mantle |
PVC |
| Resistance to vibrations |
10 … 55 Hz, amplitude 1 mm |
| Restistance to shock |
30 g / 11 ms |
Standards and approvals (4)
| Standards |
EN IEC 60947-5-3, BG-GS-ET-14 |
| Certificates |
cULus |
| eCl@ss number, version 12.0 |
27-27-44-01 |
| ETIM number, version 7.0 |
EC002544 |
Delivery time and availability
Many items of this series are available from stock; special versions are built to order by the manufacturer and take correspondingly longer. The delivery time shown in the shop applies to stocked goods and is a guide value. For urgent orders please ask us for the actual delivery time in advance – we will also check whether express shipping is possible.
Your advantage when buying from us
- Authorised Schmersal dealer — genuine products with full manufacturer warranty
- Technical advice from specialists in machine safety
- All safety-related characteristic data documented for your risk assessment
- Matching actuators and accessories from a single source
- A named contact instead of an anonymous ticket system
- Shipping from Germany, delivery throughout Europe
